Relative atomic mass

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https://www.revisely.com/gcse/chemistry/aqa/video/X2N

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4 Terms

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What are isotopes.

Atoms of an element with different numbers of neutrons.

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What is relative atomic mass.

The average of mass numbers of the different isotopes. It is weighted for the abundance of each isotope (how common each isotope is)

3
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What is equation for relative atomic mass.

(mass number of isotope 1 percent abundance of isotope 1) + (mass number of isotope 2 * percent abundance of isotope 2) ÷ 100

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